Viegas, Marcelo Caldeira published the artcileUse of the linear retention index for characterization of volatile compounds in soluble coffee using GC-MS and an HP-innowax column, Safety of 4,5-Dimethyloxazole, the publication is Quimica Nova (2007), 30(8), 2031-2034, database is CAplus.
Due to the complexity of the soluble coffee matrix, complete identification of flavor components should not be based on GC-MS anal. only. The linear retention index (LRI) is frequently used to give support to mass spectral data. Volatile compounds in dry lyophilized soluble Arabic coffee samples were characterized by head-space (solid-phase microextraction) GC-MS; the LRI values were determined with the HP-Innowax column. The combined method significantly increased the reliability of identifying the volatile compounds; 88 volatile compounds were identified.
Quimica Nova published new progress about 20662-83-3. 20662-83-3 belongs to oxazolidine, auxiliary class Oxazole, name is 4,5-Dimethyloxazole, and the molecular formula is C2H2N4O2, Safety of 4,5-Dimethyloxazole.
Referemce:
https://en.wikipedia.org/wiki/Oxazolidine,
Oxazolidine | C3H7NO – PubChem